In addition, the proportion of GH-positive cells in nicotine-treated group was 14% lower than that of saline-treated controls. Furthermore, first intron hypermethylation of Prrx1 was detected by a bisulfite sequence of genomic DNA from the anterior lobe of the rat pituitary gland. CONCLUSIONS We show that persistent nicotine exposure in young animals inhibits expression of Prrx1 in pituitary stem/progenitor cells through epigenetic regulation, leading to a delayed supply of GH-producing cells. OBJECTIVE This paper reports a new case of treponemal disease in a pre-Columbian hunter-gatherer inhabiting the desert coast of South America. MATERIALS A well-preserved adult male skeleton from the "Vertedero Municipal" archaeological cemetery, located near the city of Antofagasta (Northern Chile). METHODS The skeleton was radiocarbon dated, and isotopic analyses were performed to assess diet and mobility. Lytic and proliferative lesions identified were evaluated macroscopically and radiologically. RESULTS A radiocarbon date of 1830 ± 20 BP and isotopic values indicating a marine diet and coastal residence were obtained. The cranium shows reactive changes as focal superficial cavitation, radial scarring and nodular cavitation, while the ribs, sternum, clavicles, and scapulae exhibit multiple lytic and proliferative lesions. The right femur has a node while both tibiae show mild anterior cortical thickening with a narrowed medullary cavity. CONCLUSIONS Cranial lesions are pathognomonic for treponemal disease while postcranial changes are typical, and highly consistent with this pathology. SIGNIFICANCE The type, morphology, and pattern of lesions make this case a good candidate for venereal syphilis. https://www.selleckchem.com/products/g6pdi-1.html The case is relevant to the origin of venereal syphilis due to the lifestyle, temporal and ecological context of the individual. LIMITATIONS Diagnosis of venereal syphilis is based on skeletal lesions; thus, it must be confirmed by molecular analysis. SUGGESTIONS FOR FURTHER RESEARCH A comprehensive review of cases of pre-Columbian treponemal disease in South America as well as molecular studies are needed to confirm the presence of venereal syphilis in the New World before European contact. BACKGROUND Acute pancreatitis is a serious condition with multi-factorial etiology. The negative impact of acute pancreatitis on the exocrine pancreatic function is well documented; however, its impact on the endocrine function needs more elucidation. Our study aimed to investigate the effect of Nano-Selenium (Nano-Se) on both pancreatic functions in acute pancreatitis. METHODS l-arginine induced acute pancreatitis in rats was used as a model. Fifty adult male albino rats were separated into groups 1- control group (C), 2- C+ Nano-Se, 3-acute pancreatitis group (AP) and 4- AP+ Nano-Se. Nano-Se was administered before induction of acute pancreatitis. Serum levels of amylase, lipase, selenium, glucose, insulin and interleukin-1β (IL-1β) were measured. Homeostatic model assessment of beta cell function (HOMA-β) was also calculated. Oxidative stress markers, selenium content and the anti-apoptotic factor, B-cell leukemia/lymphoma-2 (Bcl-2) were assayed in pancreatic tissue along with immuno-expression of nuclear transcription factor-kappa B (NF-κB). RESULTS Acute pancreatitis negatively affected both pancreatic functions. Nano-Se administration lessened the developed pancreatic injury and improved both pancreatic functions. CONCLUSION Nano-Se could improve the deteriorated pancreatic functions in acute pancreatitis via its anti-inflammatory, antioxidant and pro-apoptotic actions. Thus, it may be used in prevention of acute pancreatitis and the associated hyperglycemia in vulnerable individuals such as patients undergoing endoscopic retrograde cholangio-pancreatography. Alkali metals (AMs) and alkali earth metals (AEMs) affect levels and signaling of neurotransmitters, which potentially play a role in the etiology of schizophrenia (SCZ). The current case-control study aims to explore how AMs [i.e. Potassium (K), sodium (Na), rubidium (Rb), cesium (Cs)] and AEMs [i.e. magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba)] in serum could associate with SCZ. One hundred and five inpatients with SCZ and 106 age- and sex-matched healthy controls (HCs) were recruited from Weifang, China. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) was used to evaluate serum concentrations of Na, K, Ca, Mg and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was for Rb, Cs, Sr, Ba. Subjects with SCZ had significantly higher Mg and Sr serum concentrations than HCs (20.86 vs. 19.73?μg/mL of Mg, p less then 0.001; 53.14 vs. 42.26?ng/mL of Sr, p less then 0.001). After adjusting for confounders, the odds ratio of Mg and Sr remain significantly higher in the SCZ group (Mg OR?=?2.538, 95 % CI 1.254-5.136, p=0.010; Sr OR?=?3.798, 95 % CI 1.769-8.153, p?=?0.001). No significant differences between SCZ subjects and HCs were observed for other AMs and AEMs. Higher serum concentrations of Mg and Sr were associated with SCZ. Studies are suggested to find the related mechanisms and provide clues for pathogenesis of SCZ, which would impact prevention and treatments of SCZ. OBJECTIVE To analyze the relationship between environmental lead exposure and various types of brain tumors. METHODS Search databases PubMed, Web of Science, Embase and Chinese National Knowledge Infrastructure (CNKI) as of July 1, 2019. Stata 15.0 software was used for analysis. RESULTS In the case control, lead exposure was associated with gliomas and meningiomas 0.82 (95 % CI 0.69, 0.95) and 1.06 (95 % CI 0.65, 1.46). In the cohort study, lead exposure was associated with brain cancer and meningiomas 1.07 (95 % CI 0.95, 1.19) and 1.06 (95 % CI 0.94, 1.17). The risk of childhood brain tumors associated with parental lead exposure was 1.17 (95 % CI 0.99, 1.34). CONCLUSIONS Lead may be a risk factor for meningiomas and brain cancers. However, the glioma results suggest that lead may be a protective factor, which needs to be further studied. PURPOSE The purpose of the study was to examine different aspects of well-being in mothers with epilepsy with school-aged children. METHODS In an observational study, mothers, identified from the European Registry of Antiepileptic Drugs and Pregnancy database in the Netherlands, completed questions on epilepsy, the impact of epilepsy on daily functioning, quality of life, behavioral problems, and parenting stress. Descriptive analyses were performed to examine the prevalence of behavioral problems and the impact of epilepsy on different aspects of the mother's daily functioning and family life. We subsequently investigated which factors contributed most to the impact of maternal epilepsy using regression analyses. RESULTS One hundred fifty-six (46%) of the 342 invited mothers with epilepsy participated. The majority (89%) had low epilepsy severity, with well-controlled seizures. Internalizing problems within the borderline or clinical range were reported by 23% of the mothers. Behavioral problems were significantly correlated with epilepsy severity (r?=?0.